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RISC-V: KVM: Allow Zicbop extension for Guest/VM

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Extend the KVM ISA extension ONE_REG interface to allow KVM user space
to detect and enable Zicbop extension for Guest/VM.

Signed-off-by: Quan Zhou <zhouquan@iscas.ac.cn>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Reviewed-by: Nutty Liu <nutty.liu@hotmail.com>
Reviewed-by: Nutty Liu <liujingqi@lanxincomputing.com>
Link: https://lore.kernel.org/r/db4a9b679cc653bb6f5f5574e4196de7a980e458.1754646071.git.zhouquan@iscas.ac.cn
Signed-off-by: Anup Patel <anup@brainfault.org>
This commit is contained in:
Quan Zhou
2025-08-08 18:18:44 +08:00
committed by Anup Patel
parent 48e2febcda
commit 0efd9a29c5
2 changed files with 3 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files
arch/riscv/include/uapi/asm/kvm.h
+1
View File
@@ -186,6 +186,7 @@ enum KVM_RISCV_ISA_EXT_ID {
KVM_RISCV_ISA_EXT_ZICCRSE,
KVM_RISCV_ISA_EXT_ZAAMO,
KVM_RISCV_ISA_EXT_ZALRSC,
KVM_RISCV_ISA_EXT_ZICBOP,
KVM_RISCV_ISA_EXT_MAX,
};
arch/riscv/kvm/vcpu_onereg.c
+2
View File
@@ -68,6 +68,7 @@ static const unsigned long kvm_isa_ext_arr[] = {
KVM_ISA_EXT_ARR(ZFH),
KVM_ISA_EXT_ARR(ZFHMIN),
KVM_ISA_EXT_ARR(ZICBOM),
KVM_ISA_EXT_ARR(ZICBOP),
KVM_ISA_EXT_ARR(ZICBOZ),
KVM_ISA_EXT_ARR(ZICCRSE),
KVM_ISA_EXT_ARR(ZICNTR),
@@ -200,6 +201,7 @@ static bool kvm_riscv_vcpu_isa_disable_allowed(unsigned long ext)
case KVM_RISCV_ISA_EXT_ZFA:
case KVM_RISCV_ISA_EXT_ZFH:
case KVM_RISCV_ISA_EXT_ZFHMIN:
case KVM_RISCV_ISA_EXT_ZICBOP:
case KVM_RISCV_ISA_EXT_ZICCRSE:
case KVM_RISCV_ISA_EXT_ZICNTR:
case KVM_RISCV_ISA_EXT_ZICOND: